In countries with a temperate climate, seasonal epidemics typically taper off in the spring and end before summer.
在气候温和的国家，季节性流感通常在春季减弱，在夏季来临前结束。
The application of the variable data rolling is introduced by example of the forming theory and manufacturing process of taper leaf spring of farming machinery and vehicle and truck.
以变截面板弹簧形成理论和制造过程为例，介绍了变值轧制成型技术在农业机械和农用运输车变截面板簧制造方面的应用。
The application of the variable data rolling is introduced by example of the forming theory and manufacturing process of taper leaf spring of farming machinery and vehicle and truck.
以变截面板弹簧形成理论和制造过程为例，介绍了变值轧制成型技术在农业机械和农用运输车变截面板簧制造方面的应用。
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